27 Answered Questions for the topic Optics

Optics Science Physics

04/17/22

Physics problem: find the depth of the pool
A person looks at the surface of water with an angle of 30 degrees and sees a coin 0.5 m further than it really is. What is the depth of the pool.The answer I should get is around 16 cm.
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04/04/22

Refraction problem
A light ray strikes water with an angle of 40 degrees. What should be the angle for the ray when it strikes glass, if the refraction angle is to be the same?The answer is 52 degrees
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02/26/22

why bending of a light is maximum at the centre of eye lens
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04/24/21

Why do you think is the reason that at some angle of incidence, the incident ray will not be refracted by the prism and will just pass through the prism in a straight line?
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04/24/21

is the emergent and incident ray angle equal in all triangular prism as well as the 2 angle of refraction all times or not necessarily at all? can someone help me aid with this confusion of mine.
Note: it was using the olabs simulation by amrita university which has very much inaccuracy of its protractor in the simulation
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Optics

11/26/20

Calculate the index of refraction for a diamond (v=1.25 x 108 m/s)

Calculate the index of refraction for a diamond (v=1.25 x 108 m/s)
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06/05/20

Are radio waves and sound the same?
So the electromagnetic spectrum: radio waves, micro waves, infrared rays, visible light, ultra violet rays, x rays, gamma rays, cosmic rays. Now visible range is 390 to 700 nanometers, beyond 700... more
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Optics Physics Lenses

05/13/20

A woman has been prescribed lenses that have a +3.2-diopter refractive power. The glasses are worn 2.0 cm from her eyes.

A woman has been prescribed lenses that have a +3.2-diopter refractive power. The glasses are worn 2.0 cm from her eyes. With the lenses, she can read a magazine held 25 cm from her eyes. Which one... more
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05/13/20

The right lens of Josh's contact lenses is a converging lens of +2.50 diopters. He can read a book held as close as 25 cm from his eyes.

The right lens of Josh's contact lenses is a converging lens of +2.50 diopters. He can read a book held as close as 25 cm from his eyes. Complete the following statement: Without his lenses, Josh's... more
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10/20/19

How far apart are the telescopes?
If astronomers use an interferometer observing the wavelength of 1000 nm to measure the angular diameter of a planet like Jupiter orbiting a star 10 light-years from Earth, How far apart are the... more
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05/13/19

Is it possible to 3D print a mirror to create a high quality telescope?
Is it possible to 3D print a mirror with todays available materials?If so, would there be a reduction in image quality?
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04/12/19

What are the colors of the rainbow?
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04/05/19

How big should a lens of a telescope be so we can see the American flag on the Moon from the Earth's surface?
How big in diameter should the lens of the imaginary telescope to be so we can see the American flag from e.g. some observatory in Hawaii?
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Optics

06/06/18

Final image through combination of lens and mirror
An illuminated object is placed at right angle to the axis of a converging lens of focal length 15cm and 22.5cm away from it. On the other side of the lens coaxial to it a diverging lens of focal... more
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06/05/18

Concave Mirror Problems
The famous Chinese magician Foo Ling Yu performs a classic magic trick using a concave mirror with a focal length of 1.6 m. Foo uses the mirror to produce an image of a light bulb that is the same... more
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11/26/17

What is the angle of refraction?
A ray of light traveling through air (refractive index exactly 1.0003) strikes thesurface of a transparent solid (refractive index exactly 2.5) at an incident angle ofexactly 0.7 radians. What is... more
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11/24/17

What is the angle θ of the prism?
Here is my diagram: https://i.stack.imgur.com/WYSnE.png A parallel beam of light is incident from air at an angle a on the side PQ of a right angled triangular prism of refractive index n=√2.... more
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Optics Physics Lens

09/14/17

Focal length question
A converging glass lens (index of refraction 1.63) has a focal length of 40 cm in air. Find its focal length when it is immersed in a liquid, which has an index of refraction 1.32.   The way I... more
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Optics Physics

05/19/17

RAY DIAGRAMS...
my question is when does a lens and mirror combination have an i3. cause there are examples in the internet that doesnt have i3 such as https://www.youtube.com/watch?v=aGHnH_4KFRE. and there are... more
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02/18/15

Find the critical angle and the angle of emergence
A ray of light in water of Refractive index nw=1.33 is indecent on water-air interface.  a) Find the critical angle of reflection b) Find the angle of emergence at 40 degree angle of incidence in... more
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02/08/15

Find the position and height of the image
An illuminated arrow 2 cm high is placed 108 cm from a diverging lens of focal length-36 cm. Find the position and height of the image.
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02/08/15

Find the position and height of the final image
 An object 4 cm high is 120 cm from a converging lens of 40 cm focal length. A diverging lens of focal length –100 cm is placed 20 cm beyond the converging lens. Find the position and height of the... more
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02/08/15

How much acoustic power enters the window via the sound waves?
A window whose area is 1 m2 opens on a street where the street noise results in an intensity level at the window of 60 dB. How much acoustic power enters the window via the sound waves?
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02/08/15

Find the radius of curvature of the mirror
 A magnifying mirror produces an erect virtual image 2.5 times as high as the object 24 cm from it. Find the radius of curvature of the mirror.
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02/08/15

Find the speed of light in glass, the angle of refraction in glass and the critical angle
The index of refraction of glass is 1.5. Find the speed of light in glass, the angle of refraction in glass, if the light is incident from water at an angle of 40°, the critical angle of incidence... more
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